WIRELESS EXCELLENCE, WHEREVER REQUIRED Transparent 24-bit digital audio Extended 20 Hz to 20 kHz frequency range (microphone dependent) 118 dB dynamic range Digital predictive switching diversity Operating range of 100 m (300 ft.) 44 MHz tuning bandwidth (region dependent) 32 available channels per frequency band (region dependent) Up to 10 compatible systems per 6MHz TV band; 12 systems per 8 MHz band Easy pairing of transmitters and receivers over IR scan and sync Up to 8 hours from 2 AA batteries. Upgrade to the optional Shure SB903 Lithium-ion rechargeable battery to monitor battery charge status in hours and minutes, as well as battery life and health statistics. Rugged metal construction SLX-D® Digital Wireless delivers transparent, 24-bit digital audio and rock solid RF performance with easy setup and rechargeability options in a suite of versatile wireless system configurations. Featuring industry-leading digital wireless technology and design, the SLXD2 easily syncs with a wireless receiver. A variety of interchangeable vocal microphone choices guarantees the right solution for a wide range of applications, from day-long presentations to nighttime performances.